Improvement in the manufacture of iron and steel



am asaltantes @tti-iwf;

y nous fs t naar, fo n s `'ril UN rfc N, ivi n er NIA.'

if ILettersilatent No. 108,058, datedOctober 4, 1870; antedatd September24,1870.

l WQHiMPnoi/EMENT IN- rHl: .MANuFAcTuRE oF IRON AND STEEL.

The Schedule referred "to intlzi'eee` Letters` Patent and making part ofthe same H To all whom `iti/m h j ce u: f 1 i Be it known that I,LORENZO SIBERT, of Staunton, in VI Xugustan county and State ofVirginia, have iuvented a new `and `improved Furnace for the Treatment`ot`Iron-Ores or Crude Metals ,aud I do hereby i, 'declare that the"following is a full, clear, and exact g `@description of the same,`referenoe being had Ito. the i accompanying,drawiugforming part` ofthisspecifica# tion, `and whi h h h, tical section, `son1e parts in frontofthe representsi .A centra h y sectional lineb gjrepresented in redoutlinel TheV objectofthisrinvention is the' better to `control thecharacter` orquality of the metal in 4its produc` `tion direct `from theore, so as to obtain, `by what is n known as-theSiBEI'r process, ironorsteel of any i *desiredigrade; and; l It'consistslinan aangemeutandcombination, with i a cupola ffurnaoe, of a series of reningor` decarboui ,izing iires,.and` cibleor hearth furnace, by the` use` ofAone oji which 'any desired grade may h "otluced 1n 1 otsqready tobeiforgedfrolled, org otherwise fashione'dutoi ii'oadQrails or otherforms, hout piling or fagoting. 'h f To enableiothersito make and use'my invention, will des 'i o 1 t by reterringtto the drawing. i

Thejore is reduced in the furnaoeA, the blast be- `ingsupplied thetuyeres B, ofi which any number i may y be used`, `and whichjl `are`arran ged i on opposite sides ofisaid furnace., Thehearth K, 'of thisfurnace, is elevated suliiciently abovethe ground or floor-level i to'allowt-he metaltoibetapped through the trough w Ginto the furnaces EorF, without?ladlng;` also, to admitof the slag fldwing on' intoasuitable vehicle "iforremovala When the met has rundown in suliicientquantity', theslagfwhich"oatsfon its surface flows over the dam C, down`thelshootil)`,i11to`` such iron Vehicle, in which `it isdrawn Iawaytoany convenient placeiof depositandwhen thehearthis filled with moltenmetal, h h "y be Apped` out outhe opposite side, free-from slag, directin lmolds as pigiron,orwheu v `to be treated with aflua, as `proposedin" my previous` patents, for `the production ofseini-steel or steelyiron,

inay be conducted tlnoughthetrough G, which inay l, be tapped`toallowkthe uid `inetal to flow into either or allpofl the, reningordecarbonizing furnaces E,

i whereitniaybe treatedwith the sulphate oflmagnesia and other flux, ascontemplated in said patents above mentioned, and with a blast or blastsof atmosj pheric air through the tnyeres a, for such conversion,

From these furnaces it may be` tapped out into ingots, to be treated bythe squeezers, rolls, or `other inode of` fashioning for use.

These furnaces 'E are calculatedvto refine the metal rapidly in smallquantities, but when a superior qual; v

ity or grade of metalin large quantity and of uniform quality'isdesired, I tap the 'furnace A, drawing the desired quantity through thetrough GLintothe reiiuingfurnace F, which is fitted with a removable lhearth, H,of. box-like form, which may be removed 4through the tuyeresI, and 'when sutioiently refined, the metal may be tapped out throughthe tap-hole J,

into-ingots or. other form. q

Above the trough G is an arched cover. or roof, K,

whichjis furnished `with a chimney, L, 'over `each refining-furnaceE,-and there is, also a stack, or chimney, M, overthe furnace E, for theescape of the noxious gases.

' Having Vthus described the construction and opcration of my improvedsmelting and refining-furnace,

' l. The arrangement of the slag-dam O, and shoot D, on theopposite sideof the reducing-furnace from the Hess-tap or trough G, andthe elevationof the 'hearth above the floor-level, substantially as and f or thepurpose set forth. i

2. The arrangement of a series'of rening-fires, E, for producing shearor caststeel directA from the refilming-furnace,- without reheating, asshown and described; y

31 The arrangement and combination ofthe refining-tires'E` and F, withthe reducing-furnace A, suhstantially as and for the purpose or purposesspecified.

` l l LORENZO SIBERT.

Witnesses: h h i "i W. Monats SMITH,

SYDNEY E, SMITH. i i

new, and desire to secure by Let

